Topic: Research on Key Technologies of Coupling Analysis of Deepwater Steel Catenary Risers
Speaker: Bai Xinglan, Zhejiang Ocean University
Lecture time: 14:00 -- 16:00 on Friday, September 2, 2022
Venue: Tencent Conference ID 140 756 335
Abstract: Steel Catenary Riser (SCR) is a key component connecting surface facilities to subsea wellheads. It can be adapted to a wide range of offshore platform systems and is less likely to cause wellhead damage. As a result, the steel catenary riser (SCR) is highly sought after by the offshore engineering community.
With the development of oil and gas towards deep sea and ultra-deep sea, the time-varying and uncertain Marine environment and the complexity of interaction with the surrounding soil, the dynamic response and fatigue mechanism of SCR are very complex. The coupling of motion response under different loads is more and more obvious, which is easy to cause fatigue damage at the top of SCR and the contact area.
Based on the overall analysis of SCR and floating body, combined with the local analysis of flexible joints and contact areas, a 3D nonlinear seabed model considering normal stiffness degradation and lateral resistance is established based on P-y curve, and the influence of second-order motion of floating body on the dynamic coupling characteristics of opposite tubes is studied.
Through the tube-soil interaction model test, the dynamic response characteristics of SCR under the coupling effect of floating body and seabed are explored from the aspects of floating body motion, internal force and curvature change of pipe, tube-soil interaction, etc., which provides reference value and technical guidance for the engineering application of steel catenary riser in South China Sea.
Bai Xinglan, Ph.D., PROFESSOR, GRADUATED from Ocean University of China, majored in Port Coastal and Offshore Engineering.
He is now deputy Dean of Graduate School of Zhejiang Ocean University and deputy director of Zhejiang Provincial Key Laboratory of Offshore Ocean Engineering Technology.
He has been selected into the Zhejiang Province 151 Talent Program and the young and middle-aged academic leader in Zhejiang Province. He has been engaged in postdoctoral research in China University of Petroleum (Beijing) and the Federal University of Rio de Janeiro (Brazil).
He is engaged in THE research ON THE theory and application of STRUCTURAL dynamics in offshore engineering, including Marine riser, dynamic response and structural optimization design of floating platform, suspension mechanism of submarine pipeline and key technologies of management, etc.
He has presided over 3 National Natural Science Foundation projects, more than 20 provincial and ministerial-level and enterprise-commissioned projects, and published more than 50 related academic papers, including more than 20 SCI/EI retrieved papers.
He published 4 monographs including Steel pipelines and risers and Dynamics of Deepwater riser, and more than 20 authorized invention patents.
Regional representative of China Branch of International Society of Underwater Technology (SUT) Technical Conference, Deputy secretary general of the 5th Zhejiang Graduate Education Society, reviewer of Ocean Engineering, Marine Structures, Applied Ocean Research and other international journals.
Sponsor: College of Marine Science and Engineering, Shanghai Full Penetration Far-reaching Offshore Energy and Power Frontier Scientific Research Base (Cultivation)